Gas-manufacturing machine



5 F. ADAMS GAS MANUFACTURING MACHINE Filed Jan. 11. 1922 a SheetsSh'eet 1 C. F. ADAMS GAS MANUFACTURING MACHINE June 8 1926. 1,588,153

Filed Jan. 11. 1922 s Sheets-Sheet 'z June "8 I926.

1,588,153 c. F. ADAMS GAS MANUFACTURING MACHINE Filed Jan 11, 1922 s sheets-sheets JIM 8 1926.

C. F. ADAMS GAS MANUFACTURING MACHINE 6 Sheets-Sheet '4 Filed Jan. 11, 1922 V June 8,1926.

, C. F. ADAMS GAS unumcrunmemcnmz med Jan. 11, 1922 s Sheets-Sheet 5 c. F. ADAMS GAS MANUFACTURING MACHINE Filed Jan. 11, um 6 Sheets-Sheet 6 1 v s 192's.

Patented June 8, 1926.

em"; as star as} GLA-BENGE, E; l nen/is, on Dawson 01110.

' cAs-MnNUrAcT RI'Ne- MACHINE.

This invention relates to=iinpr veinents ga s manufactumn-gmachines in gen-e1 al', and more especially to that typeofinachine-used 'fbi' procl ucing" hydrogen gas chemical process; I

The objectsofthisproposed inventionare, first; to pnovicle a container inthe form-of a metal or Woodeirtanlg 'inwhich the chemilcallreagentss maybe mixed a-ncllthe evolution of gas suit-ably control-led; second, toprovide a machine of' extremely light Weight conveniently arranged for transportation purposes antl -of great ca-pacity5 thereby providin'g a machine of-great valuei' or military purposes-y thirdto reduce-the element oat danger anol' risk to those operating a machine of this character of being; burned, scaldecl or mangleclthrong-l explosions of chemicals new usecl in such 'machines; fourth, to-1nalte-1possible asingle unit chineself confia'inecl, ea-si'lf3 operable'by a singleperson; I 7

Referring more particularly to the constructioir and l'i'lQGll'fliliSiH' described in the specification and illustrated in thedraw-- ingsr I Fig. 1 is a vertical sectioir through the combined ini'xingandgeneratingtank; show-, ing the agitatorla'lacles'ancl gas outlet screen, the power plant, the gaS GOUtlBHSGE and drier, watei cooler, Water circulating pumps, systern, cooling fan, driving mechanism; and the sludge-valve at-the bottom oftliegeneraton tank;

Fig. 1 is afront elevation of the con denserantl cooler showing the fan-in lines.

Fig: 2 is a plan viewof theeniiireinechanis'in, showing, the 'locaiiion of thepower plant, main clri ve shaft'i'ngs with; hearings, clutches and controls; agitator' cl'ri ve; 'soli cl reagent grinder ancl feed cl ri ve reagent f'cecl door, separator cl-runi, gas condenser and dining-Water cooler, cooling-fan, Water pumps {2116A circulating system;

3 is a View in elevation-partly in section of the solid f eeclg rindin'g in'echa Iii SIX V Fig: 4 i s=a:-n-end vie\v of the condenser and (hr 'er', showing-'waten spray-tubes, gas inlet and outlet tubes;- gas chamber-partitions, gas swirling fixtures; gang-e glasses drain plugs, water outlet connections; and gas and Water circulating system.

Fig 4? is longitudinal section of one d'ot'tecl of the tubes showing" the spiral baffles or sWirl er-sa- Fig. 5 is a side elevation of the gas: con- -clenser and drier with an; all" cooling fan mounted 1n connection therewith. This Hgurealso-shows a side View of the gaschamher compartments, water inlet and outlet.

Fig; 6 is a graphicillustration in secti'onal elevation of theaagitat'or 'ofitheaction of hire agitator on the liquid solutionand the gas as it rises fi'OHL the solution, themlistribution of solid material as it passes through the grinder intothe generating fianlt and the r I breaking up of the gas=huhhlbsas they leave 7 the generator.

Fig'r'? is-a plan View o'fthc-deviceshowing the location of'the clutch and power controls by which a sing-leoperator-may control the whole plant from one position.

Fig. 8-isa view invertical sectionthrough the sludge valt e showing the niannerdn which: its" stein; 1s carried through one side of the foundation Beam and operated by a crank or hand Wheel: f i'om a convenient position. r RefePBing-to-Eig: I,A1epresents-the founelation or framework upon Whichthe-entire machine is: assembled and mounted It" may be constructed of channel i roir, steel tubing, or any other suitahle niaterialg. or the framework"- of a truck or't-railer: B- isa tank con--- structed oh sheet metal; boilerplate, Wood or other 1 suitable material and serves as a container i n wh ch the reagents may be inixedz This: tank B contains an agitator (E which: is used t'o fiacillifiate thorough mixing of the reagents; to l keep them in solution during theoperation, to beat down and breal; into small particles the gas bubbles that are generated througl'r chemical action in: the solution; and to aid in thetherough distribution of the fine-particles of the reagent material fed through the grinder D;

The bottom: of tank: B issloped towards the center in order t'o rnore easily" cl'r'aw' off the sludge through the valve E'- and also provide a greater depth i onthe solutionat itscent'er than at other*-points, it being? found.

through experimentthata greater eificiency is thereby attained inthehol'cling of temperatures andthe evolution of gas through the chemical BJGl'JIOD' of the reagents. E is asoreen made oi wirecl'oth through which the 7 gas: inust pass in. leaning thegenerating Y tank. It may be madein the shape ofya cone, cylinder or disc, its function being to further break up the gas bubbles after they travel to the condenser H. This baffling of the gas bubbles results in their giving up moisture carried from the solution from which they have been generated. J is a drain pipe connected at its upper end to G and at its lower end with the generating tank B.

i This pipe is provided with a valve K to release any accumulation of moisture from the drum G, allowing it todrain back to the tank B. The condenser H and the radiator I are of the tubular type and may be made up of any suitable material that will resist corrosion and conduct'heat efficiently. Gas

' is caused to flow from the generating tank 13, due to an internal pressure created there- 7 in by the action of the reagents and in its passage from the tank is taken through the drum G, the condenser H, and then released to a suitable container, such as aballoon or tank. Passage of the gas through the con-' denser and the specific function of this part of the apparatus is further explained in Fig. 4 to follow. Mounted on shaft L is a cooling fan M interposed between condenser H and radiator I. The function of this fan M is to draw cool air through the radiator and force the 'air on through the condenser, keeping an airstream flowing through between the tubes of both the condenser and cooler while the plant is in operation. This airstream created and maintained by the fan M not only extracts heat from the water of the radiator and the gas flowing through the condenser, but causes a considerable amount of the extracted heat to be impinged on the outside surface of the tank B, thus aiding in maintaining the temperature of the solution in the tank at a point which will provide for the highest thermal efficiency in the generation of the gases. The shaft L carries two sprockets N and O, sprocket N being driven by a chain from a sprocket V on an overhead shaft Q. Sprocket O is a driving sprocket transmitting motion through a chain to sprocket R on water circulating pump shaft S; Two centrifugal water pumps P P are mounted on shaft S and maintain a circulation of water through condenser H and radiator I. This circulation may be regulated by manipulating the clutch T, cutting OE and putting on power to shaft L. This manipulation of the clutch T will also affect the airstream passing through the condenser and cooler and in conjunctionwith the circulating water in the condenser and radiator affect the temperature of the delivered gas and also the temperature of the gas and solution inside the generating tank. The sprocket on overhead shaft Q is driven bya chain from connected through a clutch H and a set of gears, not shown in this figure, to solid reagent grinder D.

A trap door Y is hinged at K and K on the upper end of tank B, and when closed is .held in place by spring Z clamped by a pin passing over spring Z and through two lugs M on opposite sides of spring Z. The aperture normally close-d by the doo'r'Y maybe used as an entrance to tank Bfor the purpose of repairing the agitator or other parts within the tank B, but is usually used for dumping into the tank such reagents as caustic soda, lime, etc, in the case of hydrogen manufacture. Control arms B and, B are attached to bell cranks A and A The opposite end of hell crank A connects through a bar N to clutch T. The bell crank A enables the operator of the ginder D to ma nipulate clutch T by actuating bar B The clutch between the sprocket wheel X and the source of power of the plant is similarly controlledby the operator of the grinder D by a similar arrangement on opposite sides of grinder D.

Fig. 3 is a sectional view of the grinder D referred to in the description of Figs. 1 and 12, and consists of avertical shaft M on the lower end of which is attached a beveled disc 0 the upper surface of which is grooved radially from the center of the circumference. On the upper end of shaft M is fitted a gear P that meshes with a gear P on one end of shaft G The gear P is loosely fitted to shaft M but contains a slot in which slides a key R which is fitted into shaft M This arrangement makes it possible to drive x shaft M through gears P but at the same time enables a reciprocating motion of shaft M through gear P At R on shaft M is a shoulder that enables the weight of shaft.

M and its accessories to be supported by a.

bearing S whichis fitted within a bushing S threaded as shown at T By turning bushing S to the right orleft, shaftls i is raised and lowered. The lower end of shaft M is mounted in a bushing T which is fitted in a spider T Riding on shaft M is a plug V which is reciprocated by operating lever V connected to plug V by a link V The body of the grinder D is made in the shape of a cylinder, into the upper end of which is fitted a casting N threaded in the center to receive the bushing or plugs S and at the lower end of which is fitted the spider and slightly ahovethebothom h 1e eaanryimg the. bushing in. Qm um} inside gnimien-D is; fifibedi a. ring: W bfii fikid om hothl facessto- 'lllidi its. center: and having its-3 lowen' fiaoe grooved 1n :1- SlIIlllfiB vided; with a suitable; opening? to receive the shaft 1/1? and about three fonmthsofg the ping I; The. body of: the: gninden D. is further provided; with a; flangering X ho enable Ehe mounting of the gninden- 0111 theabanii: B. Clutch X provides a: means of; connecting and; disconnecting the shaft Q with the pomerpiant; I

The operation: of this: part oh thQpla'nt is as follow-s2. Biy pushing down on the lever W" the apex oh the cone hopper is closedi by the plug-l'v i" Solid reagent mateniuh is fihen infiroducedf fih1'ough eifih'er a; hole giouided in the casti'iw V5 on a: hole fihi ough theside of the t a shove the hopper; on through both preferably as shown, aooverech hole 721* in the wa l l oh the hopper is provided (seeFig; The space between the grinder parts of the mechanism: (9 and VV is then'adjusted. by hurning the SCIFQW pi u'g which opemhion, as previously mentioned; raises or IOWGTFS the shaft M? afind consequently the grihder disc i For siiieiousnmizeria-l when hydnogen is: being generated, iiihas; been found thnou gh expeniinenh that; the grihdei' should be ad-jixsfied bogl'i lld t-he' mafiefi'ai as finely as possihl'e: To feed? the solid PG- aigreni? materiel to the bank B; assuming" the ie-11f? now" in motion and hhegrinder shafifl turning. the plug V is slightly opened and n'ioved up zvnd downuntil the d'esii'ed amount material has been fed fno-m the hopper X to his glii'ldl when the plug is hi'ougiit' hack to a closed positionand secured by the dog; engaging ina: notch on level amn at' X As there. maybe: a oonsi eiin'a'blepressure genemiied onthe-ihside of tank T3 whenv the gas; isbeing-munitfirccuredi the ping V' should: zrlwayshe closed except when feeding material from the hopper toche grinder. to pnevent' gas fiom escepihg' out through this part ofthe 'olhIitFs'equipmQntJ Should the vapor aris- "i'zi'g from the inside of the tank B" cause a chuniting of the m'ziflerial above the grinder disc the" disc is' lowered by adjusting fihreadedbushing S ahowi'ng thechunks to fiil" between the grinder PingWV u-nd the dies The disc is then gradually raised thrzmgh the adjustment bushing S 'and ithe chunks ground to a powder and fed to the tank B.

In using the grinder j ist" described in a series of tcstsona Working model oi pl'ant as chzscribed it is found the-i7 in; feeding,

silit'ious nmt ei'iai to asolution of caustic soda to general ze hydrogen gas,- the operator into thehopper hhenmomeueir; piaoedi iingapcorrveniicnt pos-i- 'tionn adapted 110* indicate the; temps-r izome l'HSlGiEi the tank B 7 and fondling SflIQIOll'S marteriazhin. er: o1:- Iess; quantity as needed which; Whlii' pnoduce flier highesei-efhclency' in j the: esroiiuhiorn oii gas; The intennah pressune'of' the tunic B isnlho negulasedi midi kept below the point. oh danger: byu'egululting the 'ieeda of silisi'ous lnatenizvl' tinoughz saiid grindeix. 'Ehe combination oi the hopper Xi; plug; V with its; eontroi level: V 3, the grinder disc0 ahdig 'ihder 'ri'ngW we the a'd justan'enfi' bushing S enables posihiawe feed: of siiieious matieitiul at ah! times; and tho rougifly'pnotects the openahei' f-nom. being burned: or scolded. a2 caustic: spray thrown off; from the genenoting? tank B2 up: thnough the grindeu and: tfseei'l mechanism Di. Y

Referring'to Fig: 4, the condensen consists in number of tubes (5. with. boxes; or deums' C and C- uttachedi to the. ends. The condense]; is: divided: into:- two pamfisfas far asthe flowoh gus isoonnerned, by dividing the lower box or-d'L'um. @inbox twozcompamt- I men is by means oh w partition: D);

The upper box" O1"'(-].1.111111'O ;Ofi the con densenis also diuzidied: intowe eompuntmenhs; but: the partition D! isloc'ahed in; a

plhneright: angles 30 the pantitibn; 19 in the lower tzmkvorr drama. Below partition D and. just above the upper ends ohthe tubes" oh the condenser is located? an system oi pipes D which. wire connected: Wiflh the cooling systen'r of "(he condense-1i and Radiator. Theseam so: placec ii'in: nefenenee to each new and perforated! with sm'azil apertures: sowthztt when ivat ei undo-1" pressure-is pumped into than a fine spnazy oi Waher 'w-iil" be forcenl against ofithe fiuh'es of the condenser, and aiso the lower sunfaee of the'compa rtniene D asa ind iceted at the top ofihigure' 4 below the pipes D Into: the; upper compartmentor t a-hh' 01" I such as unslhked lime: In thehottkam end of the hubsin fihe-innei hzvl fiof'the condenser E or' the half hex-o to the flank" B isphiced aswii'ling' device made of light sheet metal on any material not subject 'be'-, corrosion. The object of this devise isto set the "gas into a: -sWir1i-i1g-' motion as i1? passes throughthe tuhe, it being foui'id by experiment that this. gives the- ;r-as a; good contact with the inner Walls of the buheand incneuses" matemany the eoolihzg' and condhnsing quatliii'ies- 0i the-condenser.

Referring to Fig; 5, on one end ofthe upper compartment of the upper" drumor bani: C is hinged on a'ttached in-any'con- 'venientmannei: a small door H coveihm valve G to the pump P.

are placed in or removed from said compartis provided with a drum plug G and G and nipples G which area part of the manifold l, which is connected by the regulat- From pump P extends a pipe F" to the upper compartment of the radiator I. A nipple F is connected in the lower compartment of the radiator I and leads through the regulating valve G to the pump P. From pump P a pipe FT connects with a manifold L which is a part of the pipe D Gauges fl and H are attached to the compartments of the lower drum or tank C and serve to indicate the amount of water contained therein.

The action of the condensing and cooling apparatus as described in Figs. t and 5 is as follows: Gas is led from tank 13 through drum G to a pasageway D which leads to the lower compartment of the condenser next to tank B. Gas is then forced up through the swirlers in the tubes C as indicated in Fig. 4:, one of which is placed in the bottom of eachtube of the inner half of the condenser E The gas being thus set in a swirling motion allows all of the gas particles to impinge against the walls of the tube and give up heat and any solid substances being carried. The released heat is then partly carried away by water which is trickling down the inner walls of the tubes and partially by the air stream forced between and around the outside walls of the tubes. Solid particles are prevented from sticking to the inner walls of the tubes by being washed down tothe lower tank or drum of the condenser by the same water, in the tubes, that absorbs heat from the gas as. it passes upward to meet the water spray from the pipes D The water in passing down through the tubes increases in temperature as it falls towards the bottom. Thusv the incoming gas meets the warmer water first, giving up practically all solid matter near the bottom of the tube, and as the gas rises and meets cooler water the loss of heat by the gas particles increases.

When the gas reaches the compartment C it is subjected to a thorough drenching and poundingv from the water spray system D and is then forced. down through the tubes of the outer half of the condenser E to the lower compartment of this half and is then conveyed through a passageway D to the drying compartment in which it passes over pans D containing the drying material and is then released through a pipe or hose D to a suitable container. The gas in passing down through the tubes of the outer half of, the condenser E is in contact with the water spray throughout its travel to the outer compartment of the lower tank or drum C The water in passing through the tubes of'this part of the condenser not only assists the gas in its downward travel, but also serves to further ex: tract heat from said gas.

The circulating water is primarily cooled by the radiator l, but gives up a certain amount-of heat that it absorbs from the gas as it passes through the condenser E due to the air stream from the cooling fan. Water is forced from the bottom of the radiator I through pump P up to the water spray; system D where it is divided into a fine spray falling down through the tubing of the condenser to the two compartments of the lower drum or tank G and is extracted therefrom through the pump l? and forced through pipe F to the upper part of the radiator l. is cool water is taken from the bottom of the radiator and forced to the upper part of the condenser and warm or hot water is taken fromthe bot tom part of the condenser and forced to the upper part of the radiator, the circulation established is in a direction harmonious to the heat exchange effect. A suitable hose or pipe may be provided to convey the water between the pumps and the radiator and condenser. The nipples G and F are extended a suflicient distance up into the lower compartments of the condenser and radator to prevent solid material from being forced through the water circulating system.

Referring more particularly to Fig. 6, which is a graphic illustration of the apparatus and action of the gases within the generator and mixing tank B and drum C, the agitator and mixer is made up of two principal parts; first, the framework including a propeller, revolved in such a direction that it will beat down the bubbles rising from the solution, and the two vertical arms S and S and the horizontal arm S which. has attached to it two scraper plates T and T These two scraper plates drag three or four links W of medium'sized chain, the hollow shaft U being connected with arm G and gear U and the horizontal propeller arm U The second part, consists of the shaft V leading from the bearing V in the bottom of the tank through shaft U and connecting with gear V the propeller arms V which are set to propel the liquid in an upward direction. The gear I attached to the shaft 1 being in mesh with both gears V and U causes thetwo parts of the agitator to be driven in opposite directions.

The solution having been placed tank B through a pipe or hose, the agitator is set in motion and the solid reagents are fed through the grinderD. In accordance with a known process such solution referred to consists of slaked lime, and caustic soda.

Clearly the drying material employed in the pans D when expended can'be Zia-eluded. As Ilihe material is released humane gal-rider "it is thrown out ip the shape of a cone,

propelling arms of thalt part oI the agitator V is provided with 2a flange "X the lbase 10f which is caught by the upper anms or apnopelflers iof the agitators, carried around through ithe'ientire upper 1p art iolf lthe tank and "i onced down to t'he rsolution Where chemical action takes place generating 'ithe gas The reagentsrare *hept .ezl'e'ctimeltv only in solution and ibnenght ltdgether by 10011- trolling the temperature linside the :tanl: B and lhy megulating the speed of rotation of the iagitatorb1acle s,1the lower ones constantly remolding in {the solution. 'So'lid -mat'erial is zprevented from acci'i'nml-ating in the bottom of'the tank T and T and the dragging "of the chain links W Q; As the buhhles 'df gas I ise i rom the Isolation, their release being aided by "the upward .propnlsion ml the propel-ling arm U, #the bubbles come ante contact with the which is mormallyrabove lthe solutionandnre p actically (dismptcd, thuscreatmg small-er gas bubbles and releasing :a amount Off I Tllhe mixture :is then fo'rced through the (outlet screen 11, where it "is funther broken up helfore entering the dnu-m moisture;

passing :thr'ough the drum "(ii the :gas is caused :to :impi nge against a series :df bafile plates '3 12 which not "only aids :im'iturther breaking zup the mixture, but (causes a great deal vof moisture and heat to begiven before being releasedto the condenser. The speed atwhich :the agitator lblades must be revolved and the :amount -o'f solid material'- to :be tied through the grinder 35) while gas is being manufactured depends largely on the FIHZEtSIl'EElS iuse'd above, the kind of gas to be :manufactnred, and mosphere. Ornly this way can the proper chemical combination of slak'ed lime and caustic soda be eflected .'to produce calcium silicate, and E in :thessludge, sodium-hydrate.

As stated above ache important Ithing is the regulatien of zterrrperatirre and Lot pressure produced Eloy Jmeans of controlling the fee'd- The valve gate is controlled by a partially threaded stem X which extends through to the outside of the frame V and termi- V nates in a hand wheel or crank V for convenience in operation. The threaded portion of the valve stem X extends through y the action of the scrapers the surrounding a tea respond withet he U 7 ring, theupper face arena disc and the a block 711712 'rbhreaded to ireceive it. This block as part of a shield oricove'r Y, -which insures the "deflection I of the vsl d e, 3111, 2a"

to protect the va'hve igate X .Theiobrjectzofrtl-ie sludge dmvnward direction and serves valve E .is to provide what lam-mints to being a icontinuous process for-the production ofzhylrogen gas. This qfollows in ithe first place by EVlBlDII'QiOf the hopper control and 1 secondly the :base structure and'zagitater larrangem'ents of the schemical icom'bination tank iB.

.It will doe seen what lby ithe pnop'osedarrangement wof :clntc'h i ontrols B B and ignition and 1 gas or electrical control-E near and convenient to the grinder, the

single {operator/may Zhe located a't #grinder lb y and control lthe opelt ation "of the entire plant. What is claimed is 7 v a 11511 :a gas-imanufactaring'apparatus, a

receiving :container for ehemical sende s-1 agents, said 'con'tainer lbei'n'g provided With a valve regu latel hopper, mounted Iin said container. pen, and F21, against the laws]; =face e t said grinder ring for the purpose o-fgrindingsaid solids, said grind-er firing having its npgper and lawerin;

IlGI' fHLGGS heveled inwardly, and said grind er idisc having its ripper face beveled 'to correspond with the-"lawn face of said grinder li ing, (a gas ;generator provided with a mixing chamber and contrdllalole means for discharging :the "p oduct er the {grinding ia:ppar'atus 'directlyli nto o 'the n'fi-xing' chamagents,=s l dn'ontainer being 'provided witha v'allveregulated hopperpa grinder .ri'n'g mounted in said container b-e'l'ovv :said hop *agrinder di sc adapted "to rotate against the lower i'ace of said grinder ring pa d for the gpm-pose oi grinding said solids,- saidgnin'der ring -l1avin its upper and lower inner :fa ee's beve'led inwardly, and said "grinder disc having its flipper face beveled tofcor lower face of "said grinder lower beveled face (if said grinder disc .h avings cerrespondi-ng a gas generator provided chamber and controllable means for discharging the product of the grinding apparatus directly into the mixing chamben with a mixing 3. Ina gas manufacturing apparatus, a

receiving container for chemical solid reagents, sald container being provided with a valve regulated hopper, a grinder ring a grinder rin g below said hep grinder disc ada ted to rotafte V radial gmoves "therein,

2. a ggas manu factrrring apparatus, a reee'rvrng contalmer for chemical solid re mounted in said container'below said hopper,

and a grinder disc adapted to rotateagainst the lower face of said grinder ring for the purpose of grinding said'solids,;said grinder ringhaving its upper and lower inner faces beveled inwardly, and said grinder disc hav ing its upper face beveled to-correspond with .the lower face of said the upper face of'said disc and the lower beveled face of said grinder disc having corresponding radial grooves therein, a resolids, said means comprisinga grinder ring and a grinder disc adapted to vbe rotated against said ring, on a vertically extending rotating shaft in fixed relation laterally and slidably adjustplate of said container with an adjustable able relation verticall with respect to said shaft, said shaft being provided at the top bushing adapted to engage a shoulder on said 7 shaft, a gas generator provided with a mixing chamber and controllable means for discharging the product of the grinding apparatus directly into the mixing chamber.

5. In a gas manufacturing apparatus, a

container for chemical solid reagents, means within said container for grinding said solids, said means comprising a grinder ring and a grinder disc adapted to be rotated against said ring, said disc being mounted on a vertically extending rotating shaft in fixed relationlaterally and slidably adjustv able relation vertically with respect to said shaft, said shaft being provided at the top plate of said container with an adjustable bushing adapted to engage a shoulder on said shaft, said shaft being provided at its upper end with a beveled gear adapted to mesh with a beveled gear on the shaft of a prime mover, a gas generator provided with a mixing chamber and controllable means for discharging the product of" the grinding apparatus directly intothe mixing. chamber.

6. In a gas manufacturing apparatus, a container for chemical solid reagents, means grinder rmg,

said disc being mounted within said "containerfor grinding said solids, sald means comprislng a grinder rlng and a grinder disc adapted to be rotated;

against said ring, said disc being mounted on a vertically extending rotating shaft in fixed relation laterally and slidably adjust.

able relation verticallywith respect to said shaft, said shaft being provided at thetop plate of said container with an adjustable bushing adapted to engage a shoulder on said shaft, said shaft being provided at its upper end with a beveled gear adapted to mesh with a beveled gear on the shaft of a prime mover, and a hand-operated clutch mechanismfor engaging and disengaging said prime mover from said grinder disc shaft, a gas generator provided with a mixing chamber and controllable means for discharging the product of the grinding apparatus directly into the mixing chambers 7. In a gas manufacturing apparatus, a

gas generator including a mixing chamber,

a vertically extending hollow shaft mounted in said chamber, a solid shaft mounted free to rotate within said hollow shaft,a plurality of propelling arms mounted on said hollowv shaft adapted to exert a downward pressure when rotated, and a plurality of propelling arms mounted on said solid shaft, a plurality of said last named armsbeing adapted to ex ert a downward pressure and one of said arms being adapted to exert an upward pressure when rotated.

8. In a gas manufacturing apparatus, a gas generator including a mixing chamber, a vertically extending hollow shaft mounted in said chamber, a solid shaft mounted free to rotate within said hollow shaft, a plurality of propelling arms mounted on said hollow shaft adapted to exert a downward pressure when rotated, a plurality of propeL ling arms mounted on said solid shaft, a plurality of said last named arms being adapted to exert a downward pressure and one of said arms being adapted to exert an upward pressure when rotated, a gas outlet pipe at the top of said mixing chamber, said pipe being provided with internal baffling means, and a wire mesh strainer located at the entrance to said pipe. 1 V

In testimony whereof I aflix my signature.

CLARENCE F. ADAMS. 

